Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/PropertyClasses/HeightStructuresInputContextProperties.cs
===================================================================
diff -u -r0c17207d7682c740778dc3e665b5f1dfc70c37dd -r277048d204ab4cfad4aa5de4d57ef38b56642c25
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/PropertyClasses/HeightStructuresInputContextProperties.cs	(.../HeightStructuresInputContextProperties.cs)	(revision 0c17207d7682c740778dc3e665b5f1dfc70c37dd)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/PropertyClasses/HeightStructuresInputContextProperties.cs	(.../HeightStructuresInputContextProperties.cs)	(revision 277048d204ab4cfad4aa5de4d57ef38b56642c25)
@@ -67,7 +67,7 @@
         /// <param name="data">The instance to show the properties of.</param>
         /// <param name="propertyChangeHandler">The handler responsible for handling effects of a property change.</param>
         /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
-        public HeightStructuresInputContextProperties(HeightStructuresInputContext data, ICalculationInputPropertyChangeHandler propertyChangeHandler)
+        public HeightStructuresInputContextProperties(HeightStructuresInputContext data, IObservablePropertyChangeHandler propertyChangeHandler)
             : base(data, new ConstructionProperties
             {
                 StructurePropertyIndex = structurePropertyIndex,